Grouping analysis was performed according to SLEDAI score (A) and LV diastolic function (B). The Y axis on the left corresponds to GWE, while the right corresponds to GWI, GCW, and GWW. SLEDAI, systemic lupus erythematosus Disease Activity Index; LV, left ventricular; GWE, global work efficiency; GWI, global work index; GCW, global constructive work; GWW, global wasted work.